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... per week should make sure they are getting enough vitamin D through fortified milk and dairy products, or taking a vitamin D supplement like Calciferol, calcitrol, cholecalciferol, ergocalciferol or a multivitamin containing vitamin D. The new research strengthens the case made by some specialists ...

a picture of calciferol can be found here (but you have to scroll down quite a bit): - http://www.chemistry.wustl.edu/~edudev/ LabTutorials/Vitamins/vitamins.html the structure of tocopherol can be found here: - http://www.rike-vita.co.jp/int/tocopherol/toc1.html ...